Tests and Diagnostics RTC Test | Toshiba P25 instruction

3. Tests and Diagnostics

3.18 RTC Test

3-28	Satellite P20-25 Series Maintenance Manual

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Toshiba P25 manual Tests and Diagnostics RTC Test

Contents

Toshiba Corporation Copyright DisclaimerTrademarks Preface Safety Precautions Satellite P20-25 Series Maintenance Manual Acronyms Conventions Satellite P20-25 Series Maintenance Manual Table of Contents Tests and Diagnostics CPU HDD Replacement Procedures Appendices Hardware Overview Hardware Overview Chapter Contents Hardware Overview Features Hardware Overview Features Hardware Overview Features Features Hardware Overview Hardware Overview Features System Unit Hardware Overview System Unit Hardware Overview System Unit AUX Hardware Overview Removable Drives 2.5-inch Hard Disk Drive Removable Drives Removable Drives Hardware Overview1 3.5-inch Floppy Disk Drive Read speeds DVD-R/-RW Drive Matsushita SR-8177 256 Kbytes Max Toshiba SD-C2612 DVD-ROM Drive DVD Multi-Drive CD-RW Combo Drive Hardware Overview Power Supply Power Supply LB2 Power Supply Hardware Overview Main Battery BatteriesHardware Overview Batteries Satellite P20-25 Series Maintenance Manual Status Time RTC battery Batteries Hardware Overview Chapter Troubleshooting Procedures Troubleshooting Procedures Chapter Contents Tables Figures Troubleshooting Introduction Troubleshooting Procedures Troubleshooting Introduction Troubleshooting Procedures Troubleshooting Flowchart Troubleshooting Flowchart Troubleshooting flowchart 1/2 Troubleshooting Flowchart Troubleshooting Procedures Troubleshooting flowchart 2/2 Troubleshooting Flowchart Troubleshooting Procedures Troubleshooting Procedures Troubleshooting Flowchart Power Supply Troubleshooting Troubleshooting Procedures Power Supply Troubleshooting Battery State LED colors Definition Troubleshooting Procedures Power Supply TroubleshootingProcedure 1 Power Status Check Battery LED AC-IN LED Procedure 2 Adaptor / battery replacement Procedure 3 Power supply connection check Battery Procedure 5 Replacement check Procedure 4 Diagnostic check Troubleshooting Procedures Display Troubleshooting Display Troubleshooting Display Troubleshooting Troubleshooting Procedures Procedure 1 External display checkProcedure 2 Diagnostic check Procedure 3 Connector and replacement check FDD Troubleshooting Troubleshooting Procedures FDD Troubleshooting Troubleshooting Procedures FDD Troubleshooting Procedure 1 FDD head cleaning checkProcedure 3 Connector check and replacement check Keyboard Troubleshooting Troubleshooting Procedures Keyboard Troubleshooting Procedure 1 External keyboard check Troubleshooting Procedures Keyboard Troubleshooting External USB device troubleshooting process External USB Devices Troubleshooting Procedure 2 Replace system board Procedure 1 External device and connection check TV-Out Failure Troubleshooting Troubleshooting Procedures TV-Out Failure Troubleshooting Troubleshooting Procedures TV-Out Failure Troubleshooting Procedure 1 TV connection checkProcedure 2 TV set check Printer Port Troubleshooting Troubleshooting Procedures Printer Port Troubleshooting Procedure 3 Replace system board Troubleshooting Procedures Printer Port TroubleshootingProcedure 1 Diagnostic check Procedure 2 Printer port loopback check Touch Pad Troubleshooting Troubleshooting Procedures TouchPad Troubleshooting Troubleshooting Procedures TouchPad Troubleshooting Procedure 1 TouchPad connection checkProcedure 2 TouchPad replacement check Speaker Troubleshooting Troubleshooting Procedures Speaker Troubleshooting Procedure 3 Connection check Troubleshooting Procedures Speaker TroubleshootingProcedure 1 Audio source test Procedure 2 Earphone test Optical Drive Troubleshooting Troubleshooting Procedures Optical Drive Troubleshooting Procedure Troubleshooting Procedures Optical Drive TroubleshootingProcedure 1 Audio CD check Procedure 2 Drive cleaning check Procedure 5 Connection check and replacement check Troubleshooting Procedures Modem Troubleshooting Modem Troubleshooting Procedure 3 Modem replacement check Modem Troubleshooting Troubleshooting ProceduresProcedure 1 Telephone line connection check Procedure 2 Modem card connection check Troubleshooting Procedures Pcmcia Troubleshooting Pcmcia Troubleshooting Pcmcia Troubleshooting Troubleshooting Procedures Procedure 1 Sycard testProcedure 2 Pcmcia socket replacement check Troubleshooting Procedures Ieee 1394 Troubleshooting Ieee 1394 Troubleshooting Ieee 1394 Troubleshooting Troubleshooting Procedures Procedure 1 Ieee 1394 device checkProcedure 3 Connection and replacement check Troubleshooting Procedures Wireless LAN Troubleshooting Wireless LAN Troubleshooting Procedure 2 Connector and replacement check Wireless LAN Troubleshooting Troubleshooting Procedures Troubleshooting Procedures Bluetooth Troubleshooting Bluetooth Troubleshooting Bluetooth Troubleshooting Troubleshooting Procedures Troubleshooting Procedures Bluetooth Troubleshooting Chapter Tests and Diagnostics Tests and Diagnostics Contents Tests and Diagnostics Diagnostic Test Tests and Diagnostics Diagnostic Test Tests and Diagnostics Executing the Diagnostic Test Executing the Diagnostic Test Executing the Diagnostic Test3. Tests and Diagnostics Tests and Diagnostics Executing the Diagnostic Test Executing the Diagnostic Test Tests and Diagnostics Tests and Diagnostics Config Check Test Config Check Test DMI Check Test DMI Check Test Tests and Diagnostics PIO Loopback Test Tests and Diagnostics PIO Loopback Test Ieee 1394 Test Ieee 1394 Test Tests and Diagnostics Speaker Audio Test Tests and Diagnostics Speaker Audio Test Fan ON/OFF Test Fan ON/OFF Test Tests and Diagnostics Tests and Diagnostics Main Battery Change Test Main Battery Charge Test FDD Test FDD Test Tests and Diagnostics CD-ROM Test Tests and Diagnostics CD-ROM Test Keyboard Test Keyboard Test Tests and Diagnostics Tests and Diagnostics Keyboard Test Keyboard Test Tests and Diagnostics Mouse Pad Test Tests and Diagnostics Mouse Pad Test Mouse Pad Test Tests and Diagnostics Tests and Diagnostics LCD Pixels Mode Test LCD Pixels Mode Test Lid Switch Test Tests and Diagnostics Lid Switch Test HDD R/W Test Tests and Diagnostics HDD R/W Test HDD R/W Test Tests and Diagnostics LAN Test Tests and Diagnostics LAN Test LAN Test Tests and Diagnostics RTC Test Tests and Diagnostics RTC Test CD Control Button Test CD Control Button Test Tests and Diagnostics Tests and Diagnostics RTC Test Chapter Replacement Procedures Replacement Procedures General Replacement Procedures General General Replacement Procedures Replacement Procedures General Safety Precautions Before You Begin Assembly Procedures Disassembly Procedures Tools and Equipment Removing the battery pack BatteryBattery Replacement Procedures Removing the Battery Pack Installing the Battery Pack Replacement Procedures Battery Pressing the eject button PC Card Replacement ProceduresPC Card Removing a PC Card Removing the PC Card Replacement Procedures PC Card Installing the PC Card Removable modules Replacement Procedures Removable modules Removing the main module Removable modules Replacement ProceduresRemoving the Main Module Unlock the main module bay lock Engage the main module bay latch lock Installing the Main Module Removing the bracket screws Optical Drive Replacement ProceduresOptical Drive Disassembling the Optical Drive Replacement Procedures Optical Drive Reassembling the Optical Drive Remove seven M2⋅8 screws securing the TV tuner case Replacement Procedures TV TunerTV Tuner Disassembling the TV Tuner TV Tuner Replacement Procedures Reassembling the TV TunerSecure the lid of the TV tuner case with seven M2⋅8 screws Opening the removable HDD container Replacement Procedures Removable HDDRemovable HDD Disassembling the Removable HDD Removing the HDD case screws Removable HDD Replacement Procedures Replacement Procedures Removable HDD Reassembling the Removable HDD Removing the FDD bracket screws Replacement Procedures Removable FDDRemovable FDD Disassembling the Removable FDD Reassembling the Removable FDD Removable FDD Replacement Procedures Lift off the wireless LAN compartment cover Wireless LAN UnitReplacement Procedures Wireless LAN Unit Removing the Wireless LAN Unit 11 Removing the wireless LAN unit Wireless LAN Unit Replacement Procedures Installing the Wireless LAN Unit 12 Removing the expansion memory cover Expansion Memory Replacement ProceduresExpansion Memory Removing the Expansion Memory 13 Removing the expansion memory Replacement Procedures Expansion Memory Installing the Expansion Memory 14 Removing the modem / Bluetooth unit cover Modem / Bluetooth UnitReplacement Procedures Modem / Bluetooth Unit Removing the Modem / Bluetooth Unit 15 Removing the modem / Bluetooth unit screws Modem / Bluetooth Unit Replacement Procedures Installing the Modem / Bluetooth Unit 16 Removing the CPU compartment cover 12 CPU Replacement Procedures12 CPU Removing the CPU 17 Removing the heat sink Replacement Procedures 12 CPU 18 Removing the CPU Installing the CPU 13 HDD 13 HDD Replacement Procedures Replacement Procedures 13 HDD Removing the HDD19 Removing the HDD unit cover screws 20 Removing the HDD unit case screws 21 Removing the aluminum HDD shielding and connector Installing the HDD Open the display panel Keyboard Replacement ProceduresKeyboard Removing the Keyboard Replacement Procedures Keyboard Remove two M2.5⋅3 silver screws securing the keyboard23 Removing keyboard cable and keyboard Installing the Keyboard Remove the keyboard, HDD and main module TOP Cover Replacement ProceduresTop Cover Removing the Top Cover 25 Removing the screws from the computer underside Replacement Procedures TOP Cover Installing the Top Cover Remove the keyboard, HDD, main module and top cover Replacement Procedures Function Key BoardFunction Key Board Removing the Function Key Board Installing the Function Key Board Function Key Board Replacement Procedures 27 Removing the LED/power button board LED / Power Button BoardReplacement Procedures LED / Power Button Board Removing the LED / Power Button Board Installing the LED / Power Button Board LED / Power Button Board Replacement Procedures 28 Removing the TouchPad button board Replacement Procedures TouchPadTouchPad Removing the TouchPad Installing the TouchPad TouchPad Replacement Procedures 29 Removing the wireless LAN compartment cover Display AssemblyReplacement Procedures Display Assembly Removing the Display Assembly Display Assembly Replacement Procedures 30 Removing the wireless LAN compartment cover31 Removing the hinge cover Replacement Procedures Display Assembly Installing the Display Assembly Replacement Procedures System Board System BoardRemoving the System Board Remove the low I/O cover System Board Replacement ProceduresRemove the four hexagonal port screws 34 Removing the hexagonal port screws 35 Removing the system board screws and cables Seat the system board and secure with three M2.5⋅6 screws Installing the System Board Removing the Direct Play Button Board Replacement Procedures Direct Play Button Board36 Removing the Direct Play cover assembly Direct Play Button Board Installing the Direct Play Button Board Direct Play Button Board Replacement Procedures 37 Removing the CIR board Replacement Procedures CIR BoardCIR Board Removing the CIR Board Installing the CIR Board CIR Board Replacement Procedures 38 Removing the direct play LED board Replacement Procedures Direct play LED boardDirect play LED board Removing the Direct Play LED Board Direct play LED board Replacement Procedures Installing the Direct Play LED BoardSecure the direct play LED FPC to the system board 39 Removing the audio board screws Replacement Procedures Audio BoardAudio Board Removing the Audio Board Installing the Audio Board Audio Board Replacement Procedures 40 Removing the speaker screws Replacement Procedures SpeakersSpeakers Removing the Speakers Speakers Replacement Procedures Remove two M2.5⋅4 screws securing each speaker41 Removing the speakers Installing the Speakers 42 Removing the inner chassis fan screws Fan Set Replacement ProceduresFan Set Removing the Fan Set 43 Removing the outer chassis fan screws Replacement Procedures Fan Set Installing the Fan Set 44 Removing the display mask screws Replacement Procedures Display MaskDisplay Mask Removing the Display Mask Installing the Display Mask Display Mask Replacement Procedures 45 Removing the FL inverter board Replacement Procedures FL Inverter BoardFL Inverter Board Removing the FL Inverter Board Installing the FL Inverter Board FL Inverter Board Replacement Procedures 46 Removing the LCD module Replacement Procedures LCD ModuleLCD Module Removing the LCD Module 47 Removing the LCD cable Pull out LCD cable from LCD connector Secure LCD cable with one M2.5⋅4 screw Installing the LCD Module Appendices Appendices Appendix Contents Figure B.1 System Board FRDSY* Bottom View Table D-7 App-vi Appendix a Handling the LCD Module Precautions for handling the LCD module CRT Satellite P20-25 Series Maintenance Manual Satellite P20-25 Series Maintenance Manual Satellite P20-25 Series Maintenance Manual Satellite P20-25 Series Maintenance Manual System Board FRDSY* Bottom View Appendix B Board Layout Figure B-2 System board FRDSY* layout Top System Board FRDSY* Top View Mark Number Name Table B-1 System board ICs and connectors top and bottom PCN1 Table B-2 System board ICs and connectors top and bottom Table C-1 Sodimm I/F pin assignments 144-pin 1/4 System Board JP24/JP26 Sodimm I/F 144-pin Table C-1 Sodimm I/F pin assignments 144-pin 2/4 Table C-1 Sodimm I/F pin assignments 144-pin 3/4 Table C-1 Sodimm I/F pin assignments 144-pin 4/4 Table C-2 LCD I/F pin assignments 40-pin JP1 LCD I/F 40-pin Table C-3 RGB I/F pin assignments 15-pin JP15 RGB I/F 15-pin Table C-4 HDD I/F pin assignments 44-pin JP34 HDD I/F 44-pin Table C-5 CD-ROM I/F pin assignments 50-pin JP28 Main Module I/F 60-pin JP29 Second Module I/F 60-pin Table C-6 Parallel I/F pin assignments 25-pin JP14 Parallel I/F 25-pin Table C-7 PC Card I/F pin assignments 154-pin 1/3 JP21 PC Card I/F 150-pin S2 IORD# Table C-7 PC Card I/F pin assignments 154-pin 2/3 Table C-7 PC Card I/F pin assignments 154-pin 3/3 Table C-8 Mini PCI I/F pin assignments 124-pin 1/2 JP27 Mini PCI I/F 124-pin Table C-8 Mini PCI I/F pin assignments 124-pin1/2 AC Adaptor Connector 3-pin---Find Power Team 10 JP22, JP23, JP25 Fan I/F 3-pinMicrophone 6-pin Table C-12 Headphone Connector pin assignments 6-pin Headphone Connector 6-pin Satellite P20-25 Series Maintenance Manual Table D-1 Scan codes set 1 and set 2 1/4 Appendix D Keyboard Scan/Character Codes Table D-1 Scan codes set 1 and set 2 2/4 ALT R Table D-1 Scan codes set 1 and set 2 3/4 Table D-1 Scan codes set 1 and set 2 4/4 Table D-2 Scan codes with left Shift key Table D-4 Scan codes with Fn key Table D-3 Scan codes in Numlock mode Table D-6 No.124 key scan code Table D-5 Scan codes in overlay mode Table D-7 No.126 key scan code United Kingdom UK Keyboard United States US Keyboard Japanese JA Keyboard Spanish SP Keyboard Figure E-3 KO keyboard Korean KO Keyboard Satellite P20 Series Maintenance Manual Table F-1 Series Screw Torque List Appendix F Series Screw Torque List MDC to MB User KEY FPC Bluetooth to MB UP Hinge Cover Satellite P20-25 Series Maintenance Manual Table G-1 Mtbf Appendix G Reliability Satellite P20 Series Maintenance Manual